Well, that's blip number two for Gym Woman! Sandy is right, Gym Woman took up with a man who was still married and in the midst of an ugly divorce. What the heck did she expect? I think the honeymoon is over and she's thinking "I got him" so now the underlying uglies are starting to surface. She's becoming demanding and somewhat insensitive. It's one thing to say "this is taking a toll on me" and another to say "you don't want to be divorced". The latter is a hurtful, blaming remark. I also think your D may be playing a control game here. It's one thing to expect Dad to make you the centre of his attention when she's there, that's fair. It is not fair to demand no contact with Gym Woman. You have the right to make phone calls but should also make them brief and respect D's wishes to some degree. It's a new world, she has to adjust too. Hang in there!